O-rings sizes

Hi I got this freestyle and the o-rings on the boltkit need to be replaced but since
the ones I got in the gun where gummy I threw them away and need to know
what size the o-rings must be. I have the 1st gen freestyle.

Just off the top of my head you'll need at least 2 017's in 90 duro urethane, a 006 also in 90 duro urethane. Those are the most important to get in urethane since the'll be getting the most wear and tear.

Then you'll need a couple 020's, an 019 and an 011. Those can be buna nitrile since they won't be used on dynamic parts.